From: Inhalation of welding fumes reduced sperm counts and high fat diet reduced testosterone levels; differential effects in Sprague Dawley and Brown Norway rats
Metal
Weight % metal
Iron
52.7% ± 0.3
Chromium
16.7% ± 0.3
Manganese
24.3% ± 0.5
Nickel
5.8% ± 0.0
Copper
0.4% ± 0.0